Rotary motor.



A. BRAUER.

ROTARY Mo'ron. APPLICATION ILEI) APR.'13, 1908.

926,846. Patented July 6, 1909. Y

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ROTARY MOTOR.

APPLIcuxoN FILED APR.1a,1aos.

926,846. Patented July 6, 1909.

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A. BRAUER.v ROTARY MOTOR. PPLIOATION FILED A'Pn.1a,1aoa.

Pannd July 6, 1909.

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UNiTED STATES PATENT oEEicE.

AUGUST BRAUER, OF INDEPENDENCE, MISSOURI.

ROTARY MOTOR.

To all whom it may concern:

Be it known that I, AUGUST BRAUER, a citizen of the United States, residing at Independence, in the county of Jackson and State of Missouri, have invented certain new and useful Improvements in Rotary Motors, of which the following is a specification.

My invention relates to improvements in rotary-motors; and one of my objects is to provide a motor of this character which is ada ted to transmit the power of a motive flui such for instance, as steam, air, etc., with the greatest efficiency.

The motor is of the multicylinder type wherein the cylinders communicate with each other, so that the motive fluid after en tering the initial cylinder will successively ass through all of the remaining cylinders, but one, before finally escapingr from the motor. The one cylinder which the fluid does not pass throufrh after leaving the ini tial cylinder is supplied independently with motive fluid and is adapted to reverse the motion of the motor.

In order that the invention may be fully understood, reference will now be made to the accompanying drawings, in which:

Figure 1 represents an irregular, vertical, cross section of my improved motor on line I-I of Fig. 2. Fig. 2 is an irregular, vertical, longitudinal section of the motor on line II-II of Fig. 1, showing the rotary pistons in elevation. Fig. 3 is a vertical cross section of the reversing cylinder of the motor on line III-III of Fig. 2, showing the rotary pistons in elevation. Fig. 4 is a side elevation of the motor.

In constructing my motor any number of cylinders may be used, it depending largely on the initial velocity or pressure at which the fluid enters the motor, the object being to admit the fluid to the initial cylinder of the motor at high pressure and permit it to flow from one cylinder to another until practically all of its force has been expended upon the pistons therein before it finally escapes from the motor. As the fluid passes from one cylinder to another, it will, of course, gradually lose its power, but to com pensate for this loss, I increase the area of the piston surface of each succeeding cylinder so that the last piston may transmit substantially the same amount of power as the initial one.

In the drawings I have shown the motor consisting of three cylinders 1, 2, 3, the first Specification of Letters Patent.

Application filed April 13, 1908.

Patented July 6, 1909.

Serial No. 426,671.

two of which are provided with twin rotary pistons 4 and 5, ada ted to be driven in the directions indicated y arrows a, while cylinder 3 is provided with twin rotary pistons 7, adapted to be driven in reverse directions to pistons 4 and 5.

Pistons 4 have equally-spaced intermeshing blades 8 upon which the motive fluid acts. In the drawings each piston is shown provided with siX blades, but this number may be varied as desired. Blades S and hubs 9 of the pistons are provided with pack ing 10 and 11, respectively, which bear against the walls of the cylinders and prevent the motive fluid from escaping between the blades and said walls. Pistons 4, 5, and 7 are fixedlyemounted upon a pair of shafts 12 13, which are journaled in bearings 14 integral with the cylinder-heads 15 and in bearings 16 17 integral with partitions 1S 19, respectively, which latter separate the cylinders. Shafts 12 and 13 are provided with fiXedly-mounted pulleys 12a and 13, respectively. Bearings 14 are threaded at t eir outer ends to receive packing-nuts 14d `adjustably mounted thereon for the purpose of compressing gaskets 14b against bearings 14 and the shafts 11 and 12 for the purpose of preventing the escape of the motive fluid through the openings in said bearings.

Cylinder-heads 15 and partitions 1S 19 are provided with ducts 15a, 18, and 19a, respectively, through which a lubricant may be supplied to the shafts and their bearings.

The pistons are caused to properly intermesh with each other and are thereby protected from undue wear by a pair of inter meshing cog-wheels 2f), one of which is fixedlyanounted on shaft 12, while the other is liXedly-inounted upon shaft 13.

As cylinders 1 and 2 are alike, except that the area of the latter is greater than the former, I will proceed to describe but one of them in detail. The initial cylinder 1 is provided at its upper portion with a pair of receiving chambers 21 and twin piston chambers 22, which latter communicate with each other and the receiving chambers. Said cyl inder is also provided with four inlet-ports 23 communicating with the receiving' cham bers 21, a transverse eXhaust-port 24 communicating with the lower portions of chambers 22 and a pair of segmental channels 25 communicating at their lower ends with chambers 22 and at their upper ends with outlet-ports 26, leading to cylinder 2 through partition 18 and communicating with one of the receiving chambers 27 in the upper portion of cylinder 2.

Motive fluid is supplied to the receiving chambers through branch-pipes 28 which diverge at their lower ends so that the motive iiuid Will be discharged therefrom at a tangent to the piston-blades. By having the motive iuid discharge against the pistons in this manner the velocity as well as the expansive force of the fluid is utilized in driving said pistons. Branch-pipes 23 communicate with Ys 29 which in turn communicate with Ys 30 leading from a iluid supply-pipe 31. Ys 30 are provided with va ves 32 which may be operated independently of each other by handles 33, or simultaneously when connected by a link, which may be actuated by a lever in the well known manner. i

Exhaust-ports 24 communicate with outlet pipes 35 which conduct the exhaust fluid to an exhaust-pipe 36 provided with a valve 37, as shown in Fig. 4.

Referring now particularly to cylinder 3, 38 designates a pair of receiving chambers at the bottom of the cylinder, which communicate with twin piston chambers 39 wherein the rotary pistons operate. 40 designates two pairs of segmental channels in the walls of cylinder 3, extending from inlet-ports 41 in said Walls to the receiving chambers 33. 42 designates two pairs of diverging branchpipes communicating at their lower ends with in et-ports 41 and at their upper ends with Ys 43, which in turn communicate with a Y 44 leading from the supply-pipe 31. Y 44 is provided with a valve 45 whereby the iiow of motive fluid from the supply-pipe to cylinder 3 is controlled. 46 designates a transverse exhaust-port communicating with the upper portions of the twin chambers 39. 47 designates a pair of segmental channels in the walls of cylinder 3, leading in opposite directions from exhaustort 46 to an outlet-pipe 43 leading from the oWer side of the cylinder to exhaust-pipe 36.

From the description and drawings of cylinder 3, it will be understood that said cylinder is similar in construction to cylinders 1 and 2, except that the twin chambers 39 receive the motive fluid at their lower sides and exhaust the same at their upper sides into the channels 47, with which latter cylinders 1 and 2 are not provided.

The cylinders are firmly connected by a plurality of tie-rods 49 so they may be easily taken apart, or if desired a number of cylinders may be added to or subtracted from the motor.

I will now proceed to give a brief description of the operation of my invention. 1n starting the motor both valves 33 are opened to admit the motive 'luid to cylinders 1 and 2, so that the motor may start with full power.

After the motor has attained normal speed direct communication is cut oii between cylinder 2 and supply-pipe 31 so that the motive fluid will enter the initial cylinder and after impinging against the pistons therein the greater portion of it will iiow into cylinder 2 through the segmental channels 25 and outlet-ports 26. After impinging against the pistons in cylinder 2, it will then escape into the exhaust-pipe 36.

WV hen it is desired to stop the motor quickly,'valve 37 is closed lto prevent circulation of the motive fluid through the cylinders 1 and 2, alter which the supply may be shut off by the initial valve 32. Vhen it is desired to reverse the motion of the motor, valves 32 are closed and valve 45 is opened so that the motive fluid may pass into cylinder 3, and acting upon the lower portion of the pistons therein drive them in an opposite direction to that which they traveled when the motive fluid was permitted to enter cylinders 1 and 2.

Motion may be transmitted in one direction by a belt running over pulley 12a, or it may be transmitted in a reverse direction. by a belt running over pulley 13, hence the reversing cylinder 3 may be dispensed with when desired. Motion may also be transmitted in one direction simultaneously by both pulleys, by running a straight belt over one pulley and a crossed belt over the other pulley.

Having thus described my invention, what I claim is:

1. A rotary motor consisting of a cylinder provided with twin receiving chambers and twin piston chambers which latter communicate with eachother and said receiving chambers, motive fluid supply-pipes leading to the L receiving chambers, an exhaust-pipe leading` from the piston chambers, and a pair of intermeshing rotary pistons snugly itting within the piston chambers, and around which the receiving-chambers partly extend.

2. A rotary motor consisting of a plurality of cylinders connected together and provided with twin piston chambers having inlet and exhaust-ports, a pair of shafts extending through said cylinders, rotary pistons in a number of said cylinders for driving the shafts in certain directions, intermeshing rotary pistons in the remaining or reversing` cylinder for reversing the motion oi the shafts, channels in the walls of the reversing cylinder leading from the inlet-ports to the lower portions of the piston chambers therein, channels leading from the exhaust-port of the reversing cylinder to an outlet-pipe, and

means for independently controlling the ad- A mission of motive luid to the cylinders.

3. A rotary motor consisting of a plurality of cylinders each of which has communicating twin piston-chambers provided with inlet and exhaust-ports, a pair of intel-meshing rotary pistons mounted in the twin chambers of each cylinder, two shafts extending through the cylinders, upon which the pistons are mounted, partltions between the cylinders provided with outlet-ports each of which leads to the succeeding cylinder, and segmental channels in the exterior walls of each receding cylinder, leading from the twin c iambers thereof to the outlet-ports of the succeeding partition.

4. A rotary motor consisting of a cylinder provided with twin receiving-chambers and twin piston chambers which latter communicate With each other and said receivingchambers, motive fluid supply-pipes leading to the receiving-chambers, an exhaust-pipe leading from the piston chambers, a pair of intermeshing rotary pistons snugly fitting within the piston chambers and around which the receiving chambers partly extend, independent means for controlling the admission of motive fluid to the cylinders, and means for controlling the exhaust from the cylinders.

In testimony whereof I aiiix my signature, in the presence of two witnesses.

AUGUST BRAUER. Witnesses:

F. G. FISCHER, M. Cox. 

